config-ml.in

   1 # Configure fragment invoked in the post-target section for subdirs
   2 # wanting multilib support.
   3 #
   4 # It is advisable to support a few --enable/--disable options to let the
   5 # user select which libraries s/he really wants.
   6 #
   7 # Subdirectories wishing to use multilib should put the following lines
   8 # in the "post-target" section of configure.in.
   9 #
  10 # if [ "${srcdir}" = "." ] ; then
  11 #   if [ "${with_target_subdir}" != "." ] ; then
  12 #     . ${with_multisrctop}../../config-ml.in
  13 #   else
  14 #     . ${with_multisrctop}../config-ml.in
  15 #   fi
  16 # else
  17 #   . ${srcdir}/../config-ml.in
  18 # fi
  19 #
  20 #
  21 # Things are complicated because 6 separate cases must be handled:
  22 # 2 (native, cross) x 3 (absolute-path, relative-not-dot, dot) = 6.
  23 #
  24 # srcdir=. is special.  It must handle make programs that don't handle VPATH.
  25 # To implement this, a symlink tree is built for each library and for each
  26 # multilib subdir.
  27 #
  28 # The build tree is layed out as
  29 #
  30 # ./
  31 #   newlib
  32 #   m68020/
  33 #          newlib
  34 #          m68881/
  35 #                 newlib
  36 #
  37 # The nice feature about this arrangement is that inter-library references
  38 # in the build tree work without having to care where you are.  Note that
  39 # inter-library references also work in the source tree because symlink trees
  40 # are built when srcdir=.
  41 #
  42 # Unfortunately, trying to access the libraries in the build tree requires
  43 # the user to manually choose which library to use as GCC won't be able to
  44 # find the right one.  This is viewed as the lesser of two evils.
  45 #
  46 # Configure variables:
  47 # ${with_target_subdir} = "." for native, or ${target_alias} for cross.
  48 # Set by top level Makefile.
  49 # ${with_multisrctop} = how many levels of multilibs there are in the source
  50 # tree.  It exists to handle the case of configuring in the source tree:
  51 # ${srcdir} is not constant.
  52 # ${with_multisubdir} = name of multilib subdirectory (eg: m68020/m68881).
  53 #
  54 # Makefile variables:
  55 # MULTISRCTOP = number of multilib levels in source tree (+1 if cross)
  56 # (FIXME: note that this is different than ${with_multisrctop}.  Check out.).
  57 # MULTIBUILDTOP = number of multilib levels in build tree
  58 # MULTIDIRS = list of multilib subdirs (eg: m68000 m68020 ...)
  59 # (only defined in each library's main Makefile).
  60 # MULTISUBDIR = installed subdirectory name with leading '/' (eg: /m68000)
  61 # (only defined in each multilib subdir).
  62
  63 # FIXME: Multilib is currently disabled by default for everything other than
  64 # newlib.  It is up to each target to turn on multilib support for the other
  65 # libraries as desired.
  66
  67 # We have to handle being invoked by both Cygnus configure and Autoconf.
  68 #
  69 # Cygnus configure incoming variables:
  70 # srcdir, subdir, host, arguments
  71 #
  72 # Autoconf incoming variables:
  73 # srcdir, host, ac_configure_args
  74 #
  75 # We *could* figure srcdir and host out, but we'd have to do work that
  76 # our caller has already done to figure them out and requiring these two
  77 # seems reasonable.
  78 # Note that `host' in this case is GCC's `target'.  Target libraries are
  79 # configured for a particular host.
  80
  81 if [ -n "${ac_configure_args}" ]; then
  82   Makefile=${ac_file-Makefile}
  83   ml_config_shell=${CONFIG_SHELL-/bin/sh}
  84   ml_arguments="${ac_configure_args}"
  85   ml_realsrcdir=${srcdir}
  86 else
  87   Makefile=${Makefile-Makefile}
  88   ml_config_shell=${config_shell-/bin/sh}
  89   ml_arguments="${arguments}"
  90   if [ -n "${subdir}" -a "${subdir}" != "." ] ; then
  91     ml_realsrcdir=${srcdir}/${subdir}
  92   else
  93     ml_realsrcdir=${srcdir}
  94   fi
  95 fi
  96
  97 # Scan all the arguments and set all the ones we need.
  98
  99 ml_verbose=--verbose
 100 for option in ${ml_arguments}
 101 do
 102   case $option in
 103   --*) ;;
 104   -*) option=-$option ;;
 105   esac
 106
 107   case $option in
 108   --*=*)
 109         optarg=`echo $option | sed -e 's/^[^=]*=//'`
 110         ;;
 111   esac
 112
 113   case $option in
 114   --disable-*)
 115         enableopt=`echo ${option} | sed 's:^--disable-:enable_:;s:-:_:g'`
 116         eval $enableopt=no
 117         ;;
 118   --enable-*)
 119         case "$option" in
 120         *=*)    ;;
 121         *)      optarg=yes ;;
 122         esac
 123         enableopt=`echo ${option} | sed 's:^--::;s:=.*$::;s:-:_:g'`
 124         eval $enableopt="$optarg"
 125         ;;
 126   --norecursion | --no*)
 127         ml_norecursion=yes
 128         ;;
 129   --silent | --sil* | --quiet | --q*)
 130         ml_verbose=--silent
 131         ;;
 132   --verbose | --v | --verb*)
 133         ml_verbose=--verbose
 134         ;;
 135   --with-*)
 136         case "$option" in
 137         *=*)    ;;
 138         *)      optarg=yes ;;
 139         esac
 140         withopt=`echo ${option} | sed 's:^--::;s:=.*$::;s:-:_:g'`
 141         eval $withopt="$optarg"
 142         ;;
 143   --without-*)
 144         withopt=`echo ${option} | sed 's:^--::;s:out::;s:-:_:g'`
 145         eval $withopt=no
 146         ;;
 147   esac
 148 done
 149
 150 # Only do this if --enable-multilib.
 151 if [ "${enable_multilib}" = yes ]; then
 152
 153 # Compute whether this is the library's top level directory
 154 # (ie: not a multilib subdirectory, and not a subdirectory like newlib/src).
 155 # ${with_multisubdir} tells us we're in the right branch, but we could be
 156 # in a subdir of that.
 157 # ??? The previous version could void this test by separating the process into
 158 # two files: one that only the library's toplevel configure.in ran (to
 159 # configure the multilib subdirs), and another that all configure.in's ran to
 160 # update the Makefile.  It seemed reasonable to collapse all multilib support
 161 # into one file, but it does leave us with having to perform this test.
 162 ml_toplevel_p=no
 163 if [ -z "${with_multisubdir}" ]; then
 164   if [ "${srcdir}" = "." ]; then
 165     # Use ${ml_realsrcdir} instead of ${srcdir} here to account for ${subdir}.
 166     # ${with_target_subdir} = "." for native, otherwise target alias.
 167     if [ "${with_target_subdir}" = "." ]; then
 168       if [ -f ${ml_realsrcdir}/../config-ml.in ]; then
 169         ml_toplevel_p=yes
 170       fi
 171     else
 172       if [ -f ${ml_realsrcdir}/../../config-ml.in ]; then
 173         ml_toplevel_p=yes
 174       fi
 175     fi
 176   else
 177     # Use ${ml_realsrcdir} instead of ${srcdir} here to account for ${subdir}.
 178     if [ -f ${ml_realsrcdir}/../config-ml.in ]; then
 179       ml_toplevel_p=yes
 180     fi
 181   fi
 182 fi
 183
 184 # If this is the library's top level directory, set multidirs to the
 185 # multilib subdirs to support.  This lives at the top because we need
 186 # `multidirs' set right away.
 187
 188 if [ "${ml_toplevel_p}" = yes ]; then
 189
 190 multidirs=
 191 for i in `${CC-gcc} --print-multi-lib 2>/dev/null`; do
 192   dir=`echo $i | sed -e 's/;.*$//'`
 193   if [ "${dir}" = "." ]; then
 194     true
 195   else
 196     if [ -z "${multidirs}" ]; then
 197       multidirs="${dir}"
 198     else
 199       multidirs="${multidirs} ${dir}"
 200     fi
 201   fi
 202 done
 203
 204 # Target libraries are configured for the host they run on, so we check
 205 # $host here, not $target.
 206
 207 case "${host}" in
 208 arc-*-elf*)
 209         if [ x$enable_biendian != xyes ]
 210         then
 211           old_multidirs=${multidirs}
 212           multidirs=""
 213           for x in ${old_multidirs}; do
 214             case "${x}" in
 215               *be*) : ;;
 216               *) multidirs="${multidirs} ${x}" ;;
 217             esac
 218           done
 219         fi
 220         ;;
 221 arm-*-*)
 222         if [ x"$enable_fpu" = xno ]
 223         then
 224           old_multidirs=${multidirs}
 225           multidirs=""
 226           for x in ${old_multidirs}; do
 227             case "${x}" in
 228               *fpu*) : ;;
 229               *) multidirs="${multidirs} ${x}" ;;
 230             esac
 231           done
 232         fi
 233         if [ x"$enable_26bit" = xno ]
 234         then
 235           old_multidirs=${multidirs}
 236           multidirs=""
 237           for x in ${old_multidirs}; do
 238             case "${x}" in
 239               *26bit*) : ;;
 240               *) multidirs="${multidirs} ${x}" ;;
 241             esac
 242           done
 243         fi
 244         if [ x"$enable_underscore" = xno ]
 245         then
 246           old_multidirs=${multidirs}
 247           multidirs=""
 248           for x in ${old_multidirs}; do
 249             case "${x}" in
 250               *under*) : ;;
 251               *) multidirs="${multidirs} ${x}" ;;
 252             esac
 253           done
 254         fi
 255         if [ x"$enable_interwork" = xno ]
 256         then
 257           old_multidirs=${multidirs}
 258           multidirs=""
 259           for x in ${old_multidirs}; do
 260             case "${x}" in
 261               *interwork*) : ;;
 262               *) multidirs="${multidirs} ${x}" ;;
 263             esac
 264           done
 265         fi
 266         if [ x$enable_biendian = xno ]
 267         then
 268           old_multidirs="${multidirs}"
 269           multidirs=""
 270           for x in ${old_multidirs}; do
 271             case "$x" in
 272               *le* ) : ;;
 273               *be* ) : ;;
 274               *) multidirs="${multidirs} ${x}" ;;
 275             esac
 276           done
 277         fi
 278         if [ x"$enable_nofmult" = xno ]
 279         then
 280           old_multidirs="${multidirs}"
 281           multidirs=""
 282           for x in ${old_multidirs}; do
 283             case "$x" in
 284               *nofmult* ) : ;;
 285               *) multidirs="${multidirs} ${x}" ;;
 286             esac
 287           done
 288         fi
 289         ;;
 290 m68*-*-*)
 291         if [ x$enable_softfloat = xno ]
 292         then
 293           old_multidirs="${multidirs}"
 294           multidirs=""
 295           for x in ${old_multidirs}; do
 296             case "$x" in
 297               *soft-float* ) : ;;
 298               *) multidirs="${multidirs} ${x}" ;;
 299             esac
 300           done
 301         fi
 302         if [ x$enable_m68881 = xno ]
 303         then
 304           old_multidirs="${multidirs}"
 305           multidirs=""
 306           for x in ${old_multidirs}; do
 307             case "$x" in
 308               *m68881* ) : ;;
 309               *) multidirs="${multidirs} ${x}" ;;
 310             esac
 311           done
 312         fi
 313         if [ x$enable_m68000 = xno ]
 314         then
 315           old_multidirs="${multidirs}"
 316           multidirs=""
 317           for x in ${old_multidirs}; do
 318             case "$x" in
 319               *m68000* ) : ;;
 320               *) multidirs="${multidirs} ${x}" ;;
 321             esac
 322           done
 323         fi
 324         if [ x$enable_m68020 = xno ]
 325         then
 326           old_multidirs="${multidirs}"
 327           multidirs=""
 328           for x in ${old_multidirs}; do
 329             case "$x" in
 330               *m68020* ) : ;;
 331               *) multidirs="${multidirs} ${x}" ;;
 332             esac
 333           done
 334         fi
 335         ;;
 336 mips*-*-*)
 337         if [ x$enable_single_float = xno ]
 338         then
 339           old_multidirs="${multidirs}"
 340           multidirs=""
 341           for x in ${old_multidirs}; do
 342             case "$x" in
 343               *single* ) : ;;
 344               *) multidirs="${multidirs} ${x}" ;;
 345             esac
 346           done
 347         fi
 348         if [ x$enable_biendian = xno ]
 349         then
 350           old_multidirs="${multidirs}"
 351           multidirs=""
 352           for x in ${old_multidirs}; do
 353             case "$x" in
 354               *el* ) : ;;
 355               *eb* ) : ;;
 356               *) multidirs="${multidirs} ${x}" ;;
 357             esac
 358           done
 359         fi
 360         if [ x$enable_softfloat = xno ]
 361         then
 362           old_multidirs="${multidirs}"
 363           multidirs=""
 364           for x in ${old_multidirs}; do
 365             case "$x" in
 366               *soft-float* ) : ;;
 367               *) multidirs="${multidirs} ${x}" ;;
 368             esac
 369           done
 370         fi
 371         case " $multidirs " in
 372         *" mabi=64 "*)
 373           # We will not be able to create libraries with -mabi=64 if
 374           # we cannot even link a trivial program.  It usually
 375           # indicates the 64bit libraries are missing.
 376           if echo 'main() {}' > conftest.c &&
 377              ${CC-gcc} -mabi=64 conftest.c -o conftest; then
 378             :
 379           else
 380             echo Could not link program with -mabi=64, disabling it.
 381             old_multidirs="${multidirs}"
 382             multidirs=""
 383             for x in ${old_multidirs}; do
 384               case "$x" in
 385               *mabi=64* ) : ;;
 386               *) multidirs="${multidirs} ${x}" ;;
 387               esac
 388             done
 389           fi
 390           rm -f conftest.c conftest
 391           ;;
 392         esac
 393         ;;
 394 powerpc*-*-* | rs6000*-*-*)
 395         if [ x$enable_softfloat = xno ]
 396         then
 397           old_multidirs="${multidirs}"
 398           multidirs=""
 399           for x in ${old_multidirs}; do
 400             case "$x" in
 401               *soft-float* ) : ;;
 402               *) multidirs="${multidirs} ${x}" ;;
 403             esac
 404           done
 405         fi
 406         if [ x$enable_powercpu = xno ]
 407         then
 408           old_multidirs="${multidirs}"
 409           multidirs=""
 410           for x in ${old_multidirs}; do
 411             case "$x" in
 412               power | */power | */power/* ) : ;;
 413               *) multidirs="${multidirs} ${x}" ;;
 414             esac
 415           done
 416         fi
 417         if [ x$enable_powerpccpu = xno ]
 418         then
 419           old_multidirs="${multidirs}"
 420           multidirs=""
 421           for x in ${old_multidirs}; do
 422             case "$x" in
 423               *powerpc* ) : ;;
 424               *) multidirs="${multidirs} ${x}" ;;
 425             esac
 426           done
 427         fi
 428         if [ x$enable_powerpcos = xno ]
 429         then
 430           old_multidirs="${multidirs}"
 431           multidirs=""
 432           for x in ${old_multidirs}; do
 433             case "$x" in
 434               *mcall-linux* | *mcall-solaris* ) : ;;
 435               *) multidirs="${multidirs} ${x}" ;;
 436             esac
 437           done
 438         fi
 439         if [ x$enable_biendian = xno ]
 440         then
 441           old_multidirs="${multidirs}"
 442           multidirs=""
 443           for x in ${old_multidirs}; do
 444             case "$x" in
 445               *mlittle* | *mbig* ) : ;;
 446               *) multidirs="${multidirs} ${x}" ;;
 447             esac
 448           done
 449         fi
 450         if [ x$enable_sysv = xno ]
 451         then
 452           old_multidirs="${multidirs}"
 453           multidirs=""
 454           for x in ${old_multidirs}; do
 455             case "$x" in
 456               *mcall-sysv* ) : ;;
 457               *) multidirs="${multidirs} ${x}" ;;
 458             esac
 459           done
 460         fi
 461         if [ x$enable_aix = xno ]
 462         then
 463           old_multidirs="${multidirs}"
 464           multidirs=""
 465           for x in ${old_multidirs}; do
 466             case "$x" in
 467               *mcall-aix* ) : ;;
 468               *) multidirs="${multidirs} ${x}" ;;
 469             esac
 470           done
 471         fi
 472         ;;
 473 sparc*-*-*)
 474         case " $multidirs " in
 475         *" m64 "*)
 476           # We will not be able to create libraries with -m64 if
 477           # we cannot even link a trivial program.  It usually
 478           # indicates the 64bit libraries are missing.
 479           if echo 'main() {}' > conftest.c &&
 480              ${CC-gcc} -m64 conftest.c -o conftest; then
 481             :
 482           else
 483             echo Could not link program with -m64, disabling it.
 484             old_multidirs="${multidirs}"
 485             multidirs=""
 486             for x in ${old_multidirs}; do
 487               case "$x" in
 488               *m64* ) : ;;
 489               *) multidirs="${multidirs} ${x}" ;;
 490               esac
 491             done
 492           fi
 493           rm -f conftest.c conftest
 494           ;;
 495         esac
 496         ;;
 497 esac
 498
 499 # Remove extraneous blanks from multidirs.
 500 # Tests like `if [ -n "$multidirs" ]' require it.
 501 multidirs=`echo "$multidirs" | sed -e 's/^[ ][ ]*//' -e 's/[ ][ ]*$//' -e 's/[ ][ ]*/ /g'`
 502
 503 # Add code to library's top level makefile to handle building the multilib
 504 # subdirs.
 505
 506 cat > Multi.tem <<\EOF
 507
 508 # FIXME: There should be an @-sign in front of the `if'.
 509 # Leave out until this is tested a bit more.
 510 multi-do:
 511         if [ -z "$(MULTIDIRS)" ]; then \
 512           true; \
 513         else \
 514           rootpre=`pwd`/; export rootpre; \
 515           srcrootpre=`cd $(srcdir); pwd`/; export srcrootpre; \
 516           lib=`echo $${rootpre} | sed -e 's,^.*/\([^/][^/]*\)/$$,\1,'`; \
 517           compiler="$(CC)"; \
 518           for i in `$${compiler} --print-multi-lib 2>/dev/null`; do \
 519             dir=`echo $$i | sed -e 's/;.*$$//'`; \
 520             if [ "$${dir}" = "." ]; then \
 521               true; \
 522             else \
 523               if [ -d ../$${dir}/$${lib} ]; then \
 524                 flags=`echo $$i | sed -e 's/^[^;]*;//' -e 's/@/ -/g'`; \
 525                 if (cd ../$${dir}/$${lib}; $(MAKE) $(FLAGS_TO_PASS) \
 526                                 CFLAGS="$(CFLAGS) $${flags}" \
 527                                 prefix="$(prefix)" \
 528                                 exec_prefix="$(exec_prefix)" \
 529                                 GCJFLAGS="$(GCJFLAGS) $${flags}" \
 530                                 CXXFLAGS="$(CXXFLAGS) $${flags}" \
 531                                 LIBCFLAGS="$(LIBCFLAGS) $${flags}" \
 532                                 LIBCXXFLAGS="$(LIBCXXFLAGS) $${flags}" \
 533                                 LDFLAGS="$(LDFLAGS) $${flags}" \
 534                                 $(DO)); then \
 535                   true; \
 536                 else \
 537                   exit 1; \
 538                 fi; \
 539               else true; \
 540               fi; \
 541             fi; \
 542           done; \
 543         fi
 544
 545 # FIXME: There should be an @-sign in front of the `if'.
 546 # Leave out until this is tested a bit more.
 547 multi-clean:
 548         if [ -z "$(MULTIDIRS)" ]; then \
 549           true; \
 550         else \
 551           lib=`pwd | sed -e 's,^.*/\([^/][^/]*\)$$,\1,'`; \
 552           for dir in Makefile $(MULTIDIRS); do \
 553             if [ -f ../$${dir}/$${lib}/Makefile ]; then \
 554               if (cd ../$${dir}/$${lib}; $(MAKE) $(FLAGS_TO_PASS) $(DO)); \
 555               then true; \
 556               else exit 1; \
 557               fi; \
 558             else true; \
 559             fi; \
 560           done; \
 561         fi
 562 EOF
 563
 564 cat ${Makefile} Multi.tem > Makefile.tem
 565 rm -f ${Makefile} Multi.tem
 566 mv Makefile.tem ${Makefile}
 567
 568 fi # ${ml_toplevel_p} = yes
 569
 570 if [ "${ml_verbose}" = --verbose ]; then
 571   echo "Adding multilib support to Makefile in ${ml_realsrcdir}"
 572   if [ "${ml_toplevel_p}" = yes ]; then
 573     echo "multidirs=${multidirs}"
 574   fi
 575   echo "with_multisubdir=${with_multisubdir}"
 576 fi
 577
 578 if [ "${srcdir}" = "." ]; then
 579   if [ "${with_target_subdir}" != "." ]; then
 580     ml_srcdotdot="../"
 581   else
 582     ml_srcdotdot=""
 583   fi
 584 else
 585   ml_srcdotdot=""
 586 fi
 587
 588 if [ -z "${with_multisubdir}" ]; then
 589   ml_subdir=
 590   ml_builddotdot=
 591   : # ml_srcdotdot= # already set
 592 else
 593   ml_subdir="/${with_multisubdir}"
 594   # The '[^/][^/]*' appears that way to work around a SunOS sed bug.
 595   ml_builddotdot=`echo ${with_multisubdir} | sed -e 's:[^/][^/]*:..:g'`/
 596   if [ "$srcdir" = "." ]; then
 597     ml_srcdotdot=${ml_srcdotdot}${ml_builddotdot}
 598   else
 599     : # ml_srcdotdot= # already set
 600   fi
 601 fi
 602
 603 if [ "${ml_toplevel_p}" = yes ]; then
 604   ml_do='$(MAKE)'
 605   ml_clean='$(MAKE)'
 606 else
 607   ml_do=true
 608   ml_clean=true
 609 fi
 610
 611 # TOP is used by newlib and should not be used elsewhere for this purpose.
 612 # MULTI{SRC,BUILD}TOP are the proper ones to use.  MULTISRCTOP is empty
 613 # when srcdir != builddir.  MULTIBUILDTOP is always some number of ../'s.
 614 # FIXME: newlib needs to be updated to use MULTI{SRC,BUILD}TOP so we can
 615 # delete TOP.  Newlib may wish to continue to use TOP for its own purposes
 616 # of course.
 617 # MULTIDIRS is non-empty for the cpu top level Makefile (eg: newlib/Makefile)
 618 # and lists the subdirectories to recurse into.
 619 # MULTISUBDIR is non-empty in each cpu subdirectory's Makefile
 620 # (eg: newlib/h8300h/Makefile) and is the installed subdirectory name with
 621 # a leading '/'.
 622 # MULTIDO is used for targets like all, install, and check where
 623 # $(FLAGS_TO_PASS) augmented with the subdir's compiler option is needed.
 624 # MULTICLEAN is used for the *clean targets.
 625 #
 626 # ??? It is possible to merge MULTIDO and MULTICLEAN into one.  They are
 627 # currently kept separate because we don't want the *clean targets to require
 628 # the existence of the compiler (which MULTIDO currently requires) and
 629 # therefore we'd have to record the directory options as well as names
 630 # (currently we just record the names and use --print-multi-lib to get the
 631 # options).
 632
 633 sed -e "s:^TOP[         ]*=[    ]*\([./]*\)[    ]*$:TOP = ${ml_builddotdot}\1:" \
 634     -e "s:^MULTISRCTOP[         ]*=.*$:MULTISRCTOP = ${ml_srcdotdot}:" \
 635     -e "s:^MULTIBUILDTOP[       ]*=.*$:MULTIBUILDTOP = ${ml_builddotdot}:" \
 636     -e "s:^MULTIDIRS[   ]*=.*$:MULTIDIRS = ${multidirs}:" \
 637     -e "s:^MULTISUBDIR[         ]*=.*$:MULTISUBDIR = ${ml_subdir}:" \
 638     -e "s:^MULTIDO[     ]*=.*$:MULTIDO = $ml_do:" \
 639     -e "s:^MULTICLEAN[  ]*=.*$:MULTICLEAN = $ml_clean:" \
 640         ${Makefile} > Makefile.tem
 641 rm -f ${Makefile}
 642 mv Makefile.tem ${Makefile}
 643
 644 # If this is the library's top level, configure each multilib subdir.
 645 # This is done at the end because this is the loop that runs configure
 646 # in each multilib subdir and it seemed reasonable to finish updating the
 647 # Makefile before going on to configure the subdirs.
 648
 649 if [ "${ml_toplevel_p}" = yes ]; then
 650
 651 # We must freshly configure each subdirectory.  This bit of code is
 652 # actually partially stolen from the main configure script.  FIXME.
 653
 654 if [ -n "${multidirs}" ] && [ -z "${ml_norecursion}" ]; then
 655
 656   if [ "${ml_verbose}" = --verbose ]; then
 657     echo "Running configure in multilib subdirs ${multidirs}"
 658     echo "pwd: `pwd`"
 659   fi
 660
 661   ml_origdir=`pwd`
 662   ml_libdir=`echo $ml_origdir | sed -e 's,^.*/,,'`
 663   # cd to top-level-build-dir/${with_target_subdir}
 664   cd ..
 665
 666   for ml_dir in ${multidirs}; do
 667
 668     if [ "${ml_verbose}" = --verbose ]; then
 669       echo "Running configure in multilib subdir ${ml_dir}"
 670       echo "pwd: `pwd`"
 671     fi
 672
 673     if [ -d ${ml_dir} ]; then true; else
 674       # ``mkdir -p ${ml_dir}'' See also mkinstalldirs.
 675       pathcomp=""
 676       for d in `echo ":${ml_dir}" | sed -ne 's/^:\//#/;s/^://;s/\// /g;s/^#/\//;p'`; do
 677         pathcomp="$pathcomp$d"
 678         case "$pathcomp" in
 679           -* ) pathcomp=./$pathcomp ;;
 680         esac
 681         if test ! -d "$pathcomp"; then
 682            echo "mkdir $pathcomp" 1>&2
 683            mkdir "$pathcomp" > /dev/null 2>&1 || lasterr=$?
 684         fi
 685         if test ! -d "$pathcomp"; then
 686            exit $lasterr
 687         fi
 688         pathcomp="$pathcomp/"
 689       done
 690     fi
 691     if [ -d ${ml_dir}/${ml_libdir} ]; then true; else mkdir ${ml_dir}/${ml_libdir}; fi
 692
 693     # Eg: if ${ml_dir} = m68000/m68881, dotdot = ../../
 694     dotdot=../`echo ${ml_dir} | sed -e 's|[^/]||g' -e 's|/|../|g'`
 695
 696     case ${srcdir} in
 697     ".")
 698       echo Building symlink tree in `pwd`/${ml_dir}/${ml_libdir}
 699       if [ "${with_target_subdir}" != "." ]; then
 700         ml_unsubdir="../"
 701       else
 702         ml_unsubdir=""
 703       fi
 704       (cd ${ml_dir}/${ml_libdir};
 705        ../${dotdot}${ml_unsubdir}symlink-tree ../${dotdot}${ml_unsubdir}${ml_libdir} "")
 706       if [ -f ${ml_dir}/${ml_libdir}/Makefile ]; then
 707         if [ x"${MAKE}" = x ]; then
 708           (cd ${ml_dir}/${ml_libdir}; make distclean)
 709         else
 710           (cd ${ml_dir}/${ml_libdir}; ${MAKE} distclean)
 711         fi
 712       fi
 713       ml_newsrcdir="."
 714       ml_srcdiroption=
 715       multisrctop=${dotdot}
 716       ;;
 717     *)
 718       case "${srcdir}" in
 719       /* | [A-Za-z]:[\\/]* ) # absolute path
 720         ml_newsrcdir=${srcdir}
 721         ;;
 722       *) # otherwise relative
 723         ml_newsrcdir=${dotdot}${srcdir}
 724         ;;
 725       esac
 726       ml_srcdiroption="-srcdir=${ml_newsrcdir}"
 727       multisrctop=
 728       ;;
 729     esac
 730
 731     case "${progname}" in
 732     /* | [A-Za-z]:[\\/]* )     ml_recprog=${progname} ;;
 733     *)      ml_recprog=${dotdot}${progname} ;;
 734     esac
 735
 736     # FIXME: POPDIR=${PWD=`pwd`} doesn't work here.
 737     ML_POPDIR=`pwd`
 738     cd ${ml_dir}/${ml_libdir}
 739
 740     if [ -f ${ml_newsrcdir}/configure ]; then
 741       ml_recprog="${ml_newsrcdir}/configure --cache-file=../config.cache"
 742     fi
 743
 744     # find compiler flag corresponding to ${ml_dir}
 745     for i in `${CC-gcc} --print-multi-lib 2>/dev/null`; do
 746       dir=`echo $i | sed -e 's/;.*$//'`
 747       if [ "${dir}" = "${ml_dir}" ]; then
 748         flags=`echo $i | sed -e 's/^[^;]*;//' -e 's/@/ -/g'`
 749         break
 750       fi
 751     done
 752     ml_config_env='CC="${CC_}$flags" CXX="${CXX_}$flags" GCJ="${GCJ_}$flags"'
 753
 754     if [ "${with_target_subdir}" = "." ]; then
 755         CC_=$CC' '
 756         CXX_=$CXX' '
 757         GCJ_=$GCJ' '
 758     else
 759         # Create a regular expression that matches any string as long
 760         # as ML_POPDIR.
 761         popdir_rx=`echo ${ML_POPDIR} | sed 's,.,.,g'`
 762         CC_=
 763         for arg in ${CC}; do
 764           case $arg in
 765           -[BIL]"${ML_POPDIR}"/*)
 766             CC_="${CC_}"`echo "X${arg}" | sed -n "s/X\\(-[BIL]${popdir_rx}\\).*/\\1/p"`/${ml_dir}`echo "X${arg}" | sed -n "s/X-[BIL]${popdir_rx}\\(.*\\)/\1/p"`' ' ;;
 767           "${ML_POPDIR}"/*)
 768             CC_="${CC_}"`echo "X${arg}" | sed -n "s/X\\(${popdir_rx}\\).*/\\1/p"`/${ml_dir}`echo "X${arg}" | sed -n "s/X${popdir_rx}\\(.*\\)/\\1/p"`' ' ;;
 769           *)
 770             CC_="${CC_}${arg} " ;;
 771           esac
 772         done
 773
 774         CXX_=
 775         for arg in ${CXX}; do
 776           case $arg in
 777           -[BIL]"${ML_POPDIR}"/*)
 778             CXX_="${CXX_}"`echo "X${arg}" | sed -n "s/X\\(-[BIL]${popdir_rx}\\).*/\\1/p"`/${ml_dir}`echo "X${arg}" | sed -n "s/X-[BIL]${popdir_rx}\\(.*\\)/\\1/p"`' ' ;;
 779           "${ML_POPDIR}"/*)
 780             CXX_="${CXX_}"`echo "X${arg}" | sed -n "s/X\\(${popdir_rx}\\).*/\\1/p"`/${ml_dir}`echo "X${arg}" | sed -n "s/X${popdir_rx}\\(.*\\)/\\1/p"`' ' ;;
 781           *)
 782             CXX_="${CXX_}${arg} " ;;
 783           esac
 784         done
 785
 786         GCJ_=
 787         for arg in ${GCJ}; do
 788           case $arg in
 789           -[BIL]"${ML_POPDIR}"/*)
 790             GCJ_="${GCJ_}"`echo "X${arg}" | sed -n "s/X\\(-[BIL]${popdir_rx}\\).*/\\1/p"`/${ml_dir}`echo "X${arg}" | sed -n "s/X-[BIL]${popdir_rx}\\(.*\\)/\\1/p"`' ' ;;
 791           "${ML_POPDIR}"/*)
 792             GCJ_="${GCJ_}"`echo "X${arg}" | sed -n "s/X\\(${popdir_rx}\\).*/\\1/p"`/${ml_dir}`echo "X${arg}" | sed -n "s/X${popdir_rx}\\(.*\\)/\\1/p"`' ' ;;
 793           *)
 794             GCJ_="${GCJ_}${arg} " ;;
 795           esac
 796         done
 797
 798         if test "x${LD_LIBRARY_PATH+set}" = xset; then
 799           LD_LIBRARY_PATH_=
 800           for arg in `echo "$LD_LIBRARY_PATH" | tr ':' ' '`; do
 801             case "$arg" in
 802             "${ML_POPDIR}"/*)
 803               arg=`echo "X${arg}" | sed -n "s/X\\(${popdir_rx}\\).*/\\1/p"`/${ml_dir}`echo "X${arg}" | sed -n "s/X${popdir_rx}\\(.*\\)/\\1/p"`
 804               ;;
 805             esac
 806             if test "x$LD_LIBRARY_PATH_" != x; then
 807               LD_LIBRARY_PATH_=$LD_LIBRARY_PATH_:$arg
 808             else
 809               LD_LIBRARY_PATH_=$arg
 810             fi
 811           done
 812           ml_config_env="$ml_config_env LD_LIBRARY_PATH=$LD_LIBRARY_PATH_"
 813         fi
 814
 815         if test "x${SHLIB_PATH+set}" = xset; then
 816           SHLIB_PATH_=
 817           for arg in `echo "$SHLIB_PATH" | tr ':' ' '`; do
 818             case "$arg" in
 819             "${ML_POPDIR}"/*)
 820               arg=`echo "X${arg}" | sed -n "s/X\\(${popdir_rx}\\).*/\\1/p"`/${ml_dir}`echo "X${arg}" | sed -n "s/X${popdir_rx}\\(.*\\)/\\1/p"`
 821               ;;
 822             esac
 823             if test "x$SHLIB_PATH_" != x; then
 824               SHLIB_PATH_=$SHLIB_PATH_:$arg
 825             else
 826               SHLIB_PATH_=$arg
 827             fi
 828           done
 829           ml_config_env="$ml_config_env SHLIB_PATH=$SHLIB_PATH_"
 830         fi
 831     fi
 832
 833     if eval ${ml_config_env} ${ml_config_shell} ${ml_recprog} \
 834         --with-multisubdir=${ml_dir} --with-multisrctop=${multisrctop} \
 835         ${ml_arguments} ${ml_srcdiroption} ; then
 836       true
 837     else
 838       exit 1
 839     fi
 840
 841     cd ${ML_POPDIR}
 842
 843   done
 844
 845   cd ${ml_origdir}
 846 fi
 847
 848 fi # ${ml_toplevel_p} = yes
 849 fi # ${enable_multilib} = yes